Zipps + Vittoria Evo CX Recommended PSI

Punch · April 12, 2009, 8:31pm

Wheels: Zipp 404 front/Zipp 900 Disc Rear

Tires: Vittoria Evo CX Tubulars

My weight: 165 pounds

What is the optimal PSI for this tire, given my weight? I understand that it may vary given road conditions as well. I tried out 115 psi front/120 psi rear today and I felt that the rear could definitely be increased, not sure how much.

btmoney · April 12, 2009, 9:03pm

given the ST trend of “lower is better”, optimum PSI has to be around 34 by now…

Punch · April 12, 2009, 9:14pm

Yeah, I hear you, I did a search before I posted. My thoughts are to increase it all around by another 5 psi.

redtdi · April 12, 2009, 9:23pm

On my Zipp 808 tubular wheels I use 120 front and back. I think zipp recommends 110 but I feel safer at 120. Oh yeah I’m 165lbs also.

Ken

Shakeandbake · April 13, 2009, 1:00am

Aren’t the valve stems too long on the Vittoria tubies for the Zipp disc?

Raptor · April 13, 2009, 1:39am

CX: 115 psi

If they were Tangentes, then it would be:
121 front
126 rear
.

Punch · April 13, 2009, 2:22am

Aren’t the valve stems too long on the Vittoria tubies for the Zipp disc?
No, they fit fine. Just used the crack pipe to get in there.

rroof · April 13, 2009, 2:58am

115/120 @165 lbs? Sounds about right to me.